package dgut_test2.demo;

import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.event.ApplicationEventMulticaster;
import org.springframework.context.event.SimpleApplicationEventMulticaster;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.core.env.Environment;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Component;

@EnableConfigurationProperties(CustomProperties.class)
@Configuration
public class Lab2AutoConfig {

    @Bean
    @ConditionalOnProperty(prefix="terry.auto",name="enable",havingValue="true")
    CommandLineRunner createCustomCommandLineRunner(Environment env){
        //自動配置類
        return new CustomCommandLineRunner(env);
    }
    //@Bean (AbstractApplicationContext.APPLICATION_EVENT_MULTICASTER_BEAN_NAME)

    /**
     *@param taskExecutor {@link ThreadPoolTaskExecutor}
     *@return ApplicationEventMulticaster {@link SimpleApplicationEventMulticaster}
     * *
     *@see AbstractApplicationContext#refresh()
     *@see AbstractApplicationContext#initApplicationEventMulticaster()
     *@see AbstractApplicationContext#APPLICATION_EVENT_MULTICASTER_BEAN_NAME
     *@see AbstractApplicationContext#registerListeners()
     *@see AbstractApplicationContext#finishBeanFactoryInitialization(ConfigurableListableBeanFactory)
     *@see org.springframework.context.support.ApplicationListenerDetector
     **/
    @Bean(AbstractApplicationContext.APPLICATION_EVENT_MULTICASTER_BEAN_NAME)
    ApplicationEventMulticaster customApplicationEventMulticaster(ThreadPoolTaskExecutor taskExecutor){
        SimpleApplicationEventMulticaster eventMulticaster=new SimpleApplicationEventMulticaster();
        eventMulticaster.setTaskExecutor(taskExecutor);
        return eventMulticaster;
    }


    /**
     *事件
     */

    static class NoticeEvent extends ApplicationEvent{
        private static final Logger logger= LoggerFactory.getLogger(NoticeEvent.class);
        /**
         * 存储mess
         *
         * */
        private final String message;

        public NoticeEvent(String message){
            super(message);
            this.message=message;
            logger.info("事件已成功添加！ message：{}",message);
        }

        public String getMessage(){return message;}
    }

    /**
     * 事件监听器，监听NoticeEvent
     */
    @Component
    static class NoticeListener implements ApplicationListener<NoticeEvent>{
        private static final Logger logger=LoggerFactory.getLogger(NoticeListener.class);

        @Override
        public void onApplicationEvent(NoticeEvent noticeEvent){
            logger.info("事件监听器获取到NoticeEvent,睡眠当前线程2秒...");
            try{
                Thread.sleep(2);
            }catch (InterruptedException e){
                e.printStackTrace();
            }
            logger.info("NoticeEvent的message属性是：{}",noticeEvent.getMessage());
        }
    }






}
